NBC won Tuesday night in adults 18-49 among the Big 4 networks with “The Voice” ranking #1 for the night, scoring NBC’s best non-Olympic rating in the time period since Oct. 1.

"The Voice 6" (3.7/11 in 18-49, 13.0 million viewers overall from 8-9:01 p.m. ET) scored NBC’s highest 18-49 rating in the Tuesday 8-9 p.m. hour, excluding Olympics, since Oct. 1, 2013, and biggest overall audience for NBC in the time period, excluding Olympics, since April 16, 2013. Despite moving from last fall’s 9 p.m. start time to the earlier 8 p.m. hour, “The Voice” last night generated the second-highest 18-49 and total-viewer results for a Tuesday “Voice” since Oct. 22, trailing over that span only the Dec. 17 fall finale. Versus its year-ago Tuesday debut, last night’s “The Voice” is within 10% in 18-49 rating (3.7 vs. 4.1 on March 26, 2013) and is up 4% in total viewers (12.965 million vs. 12.407 million).

From half-hour to half-hour , “The Voice” (3.7/11 in 18-49, 13.0 million viewers overall) jumped 18% or 0.6 of a point in adults 18-49 (to a 4.0 from a 3.4). For the hour, “The Voice” ranked #1 or tied for #1 among the Big 4 networks in every key demographic.

An encore of the debut episode of “About a Boy” (2,4/7 in 18-49, 8.3 million viewers overall from 9:01-9:31 p.m. ET) ranked #2 in the half-hour among the Big 4 networks, within a tenth of a point of the slot lead (and was #1 in men 18-34 with a 1.4 rating). The 2.4 is NBC’s best non-Olympic result in the time period since the “Voice” finale on Dec. 17.

Last night’s “About a Boy” encore was up 9% versus the show’s post-Olympic 2.2 for its original run on Saturday night from11:05-11:30 p.m. ET. Last night’s 2.4 adds to Saturday’s 2.2 to produce a combined 4.6. The two telecasts have added together for a combined 16.6 million viewers overall.

A rebroadcast of the premiere episode of “Growing Up Fisher” (2.0/5 in 18-49, 7.0 million viewers overall from 9:31-10 p.m. ET) retained 83% of its lead-in from “About a Boy” and matched its post-Olympic 2.0 for its original run on Sunday night from 10:36-11 p.m. ET. Last night’s 2.0 adds to Sunday’s 2.0 to produce a combined 4.0. The two telecasts have added together for a combined 15.9 million viewers overall.

“Chicago Fire” (1.8/5 in 18-49, 7.1 million viewers overall) returned with its first telecast in five weeks and matched its 18-49 rating of the show’s prior two telecasts (1.8 on Jan. 14 and 21). “Chicago Fire” won the slot among ABC, CBS and NBC in 18-49 by a 6% margin over CBS’s “Mentalist” (1.7/5) and by a 64% margin over ABC’s premiere of “Mind Games” (1.1/3).

From half-hour to half-hour, “Chicago Fire” maintained its rating in adults 18-49 and adults 25-54 and grew in total viewers despite the 10 p.m. hour, while the drama competition on ABC and CBS declined half-hour to half-hour in all three measures.